Capping machine for specimens



Dec. 18, 1934. M. v. NARDIELLO CAI-PING MACHINE FOR SPECIMENS 2 Sheets-Sheet 1 Filed June 29, 1932 INVENTOR #472 we] 1 fl az'dzle ZZo,

Dec. 18, 1934. M v NARDIELLO 1,984,691

GAPPING MACHINE FOR SPECIMENS Filed June 29, 1932 2 Sheets-Sheet 2 INVENTOR Wa 246i 1 /Va izi'z'e 0 A BY ATTORN Patented Dec. 18, 1934 UNITED STATES FALENT Manuel V. Nardiell Tinius 1,984,691 CAPPING MACHINE FOR SPECIMENS Olsen Vania Application June 29, 1932, Serial No. 619,877

7 Claims.

The present invention relates to testing apparatus and more particularly capping test pieces.

to a mechanism for that the test pieces parallelism of the cap ends can be properly mounted and held in the testing machine. bling of the caps upon the cylinders it has heretofore been extremely difficult to In the assemsecure absolute and as a result the applied force is not always acting normal to the two ends of the cylinder and-therefore inaccuracies appear in the measured Some of the objects of the are to provide an improved results. present invention capping device for concrete or other molded cylinders which are to be tested under load; to provide a capping mechanism wherein provision is the heads of thecaps lying made for ensuring in planes at right angles to the longitudinal axis of the cylinder;

to provide a novel clamping means the ends of a cylinder in position capping operation; to means for the end of a for holding during the provide a rigid holding cylinder and with which is associated certain adjuncts whereby molten material can be molded acro inder; to provide a cap the in a plane at right angles cylinder; and to provide th will hereinafter appear.

ss the end of a cylhead of which lies to the axis of the er improvements as In the accompanying drawings Fig. 1 represents a side elevation of a cylinder capping machine embodying one form of the present inven tion; Fig. 2 represents a plan of the same; Fig. 3

represents an end view partly broken away of the machine; Fig. 4 represents a perspective of one of the clamping segments; and Fig. 5 represents a side elevation of a cylinder with the caps molded thereon.

Referring to the drawings one form of the present invention consists of of generally rectangular sha a base preferably pe having a bed 11 from which rise at right angles thereto head plates 12 arranged in spaced apart parallel relation. The base 10 is provided with a longitudinally disposed undercut tion of the bolt heads of slot 13 for the recepthe respective bolts 14 by which the head plates 12 are the base 10. As here shown one anchored to of the head plates is arranged to be permanently fixed in position, while the other can be adjusted to any desired position by operating a handle 15 which is pivotally attached to the end of the bolt projecting up through the am;

ular base extension Company, Pennsylof the head plate. Thus by releasing the locking action of the bolt by the cam action of the nose 16 of the handle 15, the head plate can be shifted relative to the bed to assume a new position and then again locked against movement. From the foregoing it will be apparent that'two spaced apart head plates are mounted upon the bed 11 and present two opposed plane surfaces, each of which as will later appear-serves as the face against which the casting material is molded to form the cap.

For supporting one end of the cylinder, a saddle 20 is mounted upon the bed 11 and is made fast to the adjacent head plate 12 by means of stud screws 21 which extend through the saddle and have threaded engagement with the plate 12 to draw the side of the saddle into flush contact with the face of the plate 12. As here shown the saddle 20 forms an are substantially equal to onethird of a circle and has the contour and radius such as will conform to and accurately seat substantially one-third of the desired size cylinder therein. The opposite ends of the saddle 20 are preferably cut away in a substantially vertical direction to form slots 22 to respectively receive the butts 23 of two ring segments 24 each equal in length to one-third of the circumference and forming with the saddle one complete clamping unit. Each butt 23 is pivotally mounted upon a pin 25 extending transversely of the slot 22 and anchored in the walls of the saddle 20. It should be noted that each butt 23 is substantially of circular contour but mounted eccentrically on the pin 25 so that the inner margin of its clamping segment 24 forms, in assembled condition, a continuation of the curvature of the saddle 20. When assembled each segment 24 with the saddle 20 forms a cylindrical space 29, bounded on the ends respectively by a head plate 12 and one end of the test cylinder, and when this space is filled with leadite or other cap forming material a cap is molded on to the end of the cylinder. The free ends of the segments 24 are respectively provided with outwardly arranged radially disposed lugs 26 and 27 to form a registered pair when the ends of the ring segments are brought together. These lugs 26 and 27 are riveted or otherwise made fast to the respective segments and have the sides opposite the head plate 12 respectively provided with outwardly and circumfe'rentially extended flanges 28 which are substantially complemental in shape so that when two are brought together by the clamping of the segments a gate or sprew is provided for directing the metal to the space 29.

For holding the two segments 24 clamped about a cylinder, a rod 30 passes through a hole 31 in the lug 27 to have relative sliding movement and terminates in a threaded end provided with an adjusting nut 32. rod 30 and is held compressed between the lug 27 and the nut 32. The lug 26 is slotted to allow free passage of the rod 30 so that its projecting end can be connected to an operating handle 34. This handle 34 terminates in a forked end 35 which straddles the rod 30 and has pivotal engagement therewith by means of a transversely arranged pin 36. The forked end 35 terminates in rounded nose 37 to coact with the side of the lug 26 and the pivoting connection is preferably off -center to bring about the-desired cam leverage for placing the parts under the clamping action of the spring 33.

In order to catch any leakage of material from the mold, two pans 38 are mounted on the bed, one in close proximity to one saddle and the other similarly placed with respect to the other saddle 20. Since these pans 38 are beneath the cylinder, when the latter is in casting position, and abut the saddles, any leakage of metal finds its way into the pans.

In operation the parts of the two clamping segments 2% are released by rocking the handles 34 upward toremove the rods 30 from the lug slots so that the segments can be swung back' about the pivot pins :to allow free entry of the cylinder to the saddles 20. With the head plates 12 set the required distance apart for the particular cylinder and with the latter positioned on the two saddles 20 with its ends spaced from the respective head plates 12 to give the required cap thickness, the segments 24 are brought over the cylinder to clamping position and there held by the pressure of the springs 33. Thus the cylinder is not only firmly anchored in casting position by the combined action of the segments 24 and saddle 20 but the segment extensions provide the gate 28 which facilitates the pouring of the casting metal into the space forming the cap mold.

While only a single form is shown in which this invention may be embodied, it is to be understood that the invention is not limited to any specific construction, but might be applied to various forms without departing from the spirit of the invention or the scope of the appended claims. In connection with the form of the invention shown it is to be understood that wherever the term cylinder appears it is to be considered as merely by way of example and that the machine broadly is for the capping of any suitable test specimens.

Having thus described my invention, I claim:

1. A capping machine for test specimens, comprising a base, head plates mounted on said base and each forming one side of a cap mold, a saddle adjacent each plate and forming the bottom of the cap mold, segmental members pivoted to the ends of each saddle for clamping a test specimen in casting position, said members forming the top of the cap mold, and means for holding said members in clamped position.

A spring 33 is coiled about the 2. A capping machine for test specimens, comprising a base, head plates mounted on said base and each forming one side of a cap mold, a saddle adjacent each plate and forming the bottom of the cap mold, segmental members pivoted to the ends of each saddle for clamping a test specimen in casting position, said members forming the top of the cap mold, and spring pressed means for holding said members in clamped position.

3. A capping machine for test specimens, comprising a base, head plates mounted on said base and each forming one side of a cap mold, a saddle adjacent each plate and forming the bottom of the cap mold, devices for clamping a test specimen to eachsaddle, each device being attached at its ends to said saddle to form the top of the cap mold, and spring controlled means for holding each device in operative position.

4. A. capping machine for test specimens, comprising a base, head plates mounted on said base and each forming one side of a cap mold, asaddle adjacent each plate and forming the bottom of the cap mold, devices for clamping a test s'pec irnen to each saddle, each device being attached at its ends to said saddle and arranged to form a space with the adjacent head plate, spring controlled means for holding each device in operative position, and means on each device forming a gate leading to the aforesaid space.

5. In a capping machine for test specimens, a clamping device comprising a saddle for supporting an end of a specimen, a clamping segment pivoted to one end of said saddle and provided with a gate forming means, a second clamping segment pivoted to the other end of said sad dle and provided with a gate forming means, a head plate, said saddle segments and head plate forming a mold communicating with'said gate forming means, and meansto join the free ends of said segments together, whereby said specimen is clamped in position.

6. A capping machine for test specimens, comprising a base, head plates mounted on said base and each forming one side of a cap mold, a saddle adjacent each plate and forming the bottom of the cap mold, segmental members pivoted to the ends of each saddle for clamping a test specimen in casting position, said members forming the top of the cap mold, means for holding said members in clamped position, and means for varying the spaced relation of said head plates for specimens of different lengths.

'7. In a capping machine fortest specimens, at base, a head plate rising therefrom to form one side of a mold the other side of which is formed by the end of the specimen to be capped, a saddle abutting said head plate and forming a seat extending around a portion of the circumference of said specimen, two segments forming with said saddle and head plate a complete circumferential mold, each of said segments being pivoted to an end of said saddle, and means for clamping the free ends of said segments together, whereby said segments clamp a specimen to said saddle.

MANUEL v. NARDIELLO. 

